Southern Ocean

IHO sea area 67 · -180° to 180° E, -86° to -60° N

in force
3
last 12 months
5
since 1999
3,133
categories
9

In force now · 3

  1. HYDROLANT 1570/26 · Icebergs2026-08-14
    Icebergs reported in the Scotia Sea and Antarctica at several coordinates; message cancels August 15, 2026, 06:32 UTC.
  2. HYDROPAC 2289/26 · Missiles2026-08-10
    Space debris hazard operations daily 13 to 26 August, 2100Z to 1800Z, in the South Pacific.
  3. HYDROLANT 1279/26 · Icebergs2026-06-30
    Icebergs are reported in South Atlantic, South Pacific, and Antarctica at positions A81, A84, A85, D33A, D33C; cancel message 011327Z July 26.

Longest in force

  1. HYDROLANT 1279/26 · Icebergs2026-06-30
    Icebergs are reported in South Atlantic, South Pacific, and Antarctica at positions A81, A84, A85, D33A, D33C; cancel message 011327Z July 26.
  2. HYDROPAC 2289/26 · Missiles2026-08-10
    Space debris hazard operations daily 13 to 26 August, 2100Z to 1800Z, in the South Pacific.
  3. HYDROLANT 1570/26 · Icebergs2026-08-14
    Icebergs reported in the Scotia Sea and Antarctica at several coordinates; message cancels August 15, 2026, 06:32 UTC.

By year

99
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
26

By month (all years)

J
F
M
A
M
J
J
A
S
O
N
D

By category · since 1997

Icebergs2,99295%
Surveys421%
Missiles381%
Nav aids241%
Other181%
Wrecks120%
Derelicts40%
Exercises20%
Containers10%

Archive · 3,130 cancelled

  1. HYDROLANT 1891/18 · Icebergs2018-06-13 → 2018-06-14
    Icebergs reported in: a. B09F, 61-55S 053-51W
  2. HYDROPAC 2192/18 · Missiles2018-06-13 → 2018-06-18
    Hazardous operations, space debris 2120Z to 2350Z daily 16 and 17 jun in area bound by 59-42S 165-49E,…
  3. HYDROPAC 2183/18 · Icebergs2018-06-12 → 2018-06-13
    Iceberg B31 reported in 63-46S 073-28W
  4. HYDROLANT 1878/18 · Icebergs2018-06-12 → 2018-06-13
    Icebergs reported in: a. B09F, 61-55S 053-51W
  5. HYDROPAC 2174/18 · Icebergs2018-06-11 → 2018-06-12
    Iceberg B31, in 63-46S 073-28W
  6. HYDROPAC 2159/18 · Icebergs2018-06-10 → 2018-06-11
    Iceberg B31, in 63-46S 073-28W
  7. HYDROLANT 1861/18 · Icebergs2018-06-10 → 2018-06-11
    Icebergs reported in: a. B09F, 61-55S 053-51W
  8. HYDROPAC 2149/18 · Icebergs2018-06-09 → 2018-06-10
    Iceberg B31, in 63-46S 073-28W
  9. HYDROLANT 1844/18 · Icebergs2018-06-09 → 2018-06-10
    Icebergs reported in: a. B09F, 61-55S 053-51W
  10. HYDROLANT 1825/18 · Icebergs2018-06-08 → 2018-06-09
    Icebergs reported in: a. B09F, 61-55S 053-51W
  11. HYDROPAC 2135/18 · Icebergs2018-06-08 → 2018-06-09
    Iceberg B31, in 63-46S 073-28W
  12. HYDROLANT 1785/18 · Icebergs2018-06-06 → 2018-06-07
    Icebergs reported in: a. B09F, 61-46S 053-40W
  13. HYDROPAC 2119/18 · Icebergs2018-06-06 → 2018-06-07
    Iceberg B31, in 62-57S 072-14W
  14. HYDROLANT 1760/18 · Icebergs2018-06-04 → 2018-06-05
    Icebergs reported in: a. B09F, 61-55S 053-51W
  15. HYDROPAC 2101/18 · Icebergs2018-06-04 → 2018-06-05
    Iceberg B31, in 63-46S 073-28W
  16. HYDROPAC 2090/18 · Icebergs2018-06-03 → 2018-06-04
    Iceberg B31 reported in 63-46S 073-28W
  17. HYDROLANT 1750/18 · Icebergs2018-06-03 → 2018-06-04
    Icebergs reported in: a. B09F, 61-55S 053-51W
  18. HYDROPAC 2085/18 · Icebergs2018-06-02 → 2018-06-03
    Iceberg B31 reported in 63-46S 073-28W
  19. HYDROLANT 1738/18 · Icebergs2018-06-02 → 2018-06-03
    Icebergs reported in: a. A09F, 61-55S 053-51W
  20. HYDROPAC 2050/18 · Icebergs2018-05-30 → 2018-05-31
    Iceberg B31 reported in 63-46S 073-28W

Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.